# Build recipe for giflib.
#
# Copyright (c) 2018 Markus Tornow, <tornow@riseup.net>.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

program=giflib
version=5.1.4
release=1

# Set 'outdir' for a nice and well-organized output directory
outdir="${outdir}/${arch}/libs"

tarname=${program}-${version}.tar.bz2

# Remote source(s)
fetch=https://downloads.sourceforge.net/giflib/"$tarname"

description="
GIFLIB is a package of portable tools and library routines for working with GIF images.

The Graphics Interchange Format(c) specification is the copyrighted property of CompuServe Incorporated. GIF(sm) is a service mark property of CompuServe Incorporated.

This package has been released under an X Consortium-like open-source license. Use and copy as you see fit. If you make useful changes, add new tools, or find and fix bugs, please send your mods to the maintainers for general distribution.

The util directory includes programs to clip, rotate, scale, and position GIF images. These are no replacement for an interactive graphics editor, but they can be very useful for scripted image generation or transformation.

The library includes program-callable entry points for reading and writing GIF files, an 8x8 utility font for embedding text in GIFs, and an error handler. GIF manipulation can be done at a relatively low level by sequential I/O (which automatically does/undoes image compression) or at a higher level by slurping an entire GIF into allocated core.

This library speaks both GIF87a and GIF89. The differences between GIF87 and GIF89 are minor: in the latter, the interpretation of some extension block types is defined. The library never needs to actually interpret these, but giftext notices them and there are functions in the API to read and modify them.
"

homepage=http://giflib.sourceforge.net/
license="Custom, X Consortium like"

# Source documentation
docs="AUTHORS BUGS ChangeLog COPYING INSTALL NEWS README TODO "
docsdir="${docdir}/${program}-${version}"

build()
{
    set -e

    unpack "${tardir}/$tarname"

    cd "$srcdir"

    ./configure CFLAGS="$QICFLAGS" LDFLAGS="$QILDFLAGS" \
     $configure_args \
     --libdir=/usr/lib${libSuffix} \
     --infodir=$infodir \
     --mandir=$mandir \
     --docdir=$docdir \
     --build="$(cc -dumpmachine)"

    make -j${jobs} V=1
    make -j${jobs} DESTDIR="$destdir" install

    # Compress info documents deleting index file for the package
    if test -d "${destdir}/$infodir"
    then
        rm -f "${destdir}/${infodir}/dir"
        lzip -9 "${destdir}/${infodir}"/*
    fi

    # Compress and link man pages (if needed)
    if test -d "${destdir}/$mandir"
    then
        (
            cd "${destdir}/$mandir"
            find . -type f -exec lzip -9 '{}' +
            find . -type l | while read -r file
            do
                ln -sf "$(readlink -- "$file").lz" "${file}.lz"
                rm -- "$file"
            done
        )
    fi

    # Copy documentation
    mkdir -p "${destdir}${docsdir}"
    cp -p $docs "${destdir}${docsdir}/"
}


